Feeding mechanism for filled-bag-sewing machines



D S. SEYMOUR.

FEEDING MECHANISM FOR FILLED BAG SEWING MACHINES. APPLIICATION FILED NOV. 21, 1917.

1,403,874. Patented Jan. 17, 1922.

4 $HhETSSHEET 1.

3mm ntoz D. S. SEYMOUR.

FEEDING MECHANISM FOR FILLED BAG SEWING MACHINES. APPLICATION FILED NOV. 21, 1917.

1,408,874, Patented Jan. 17, 1922 4 SHLETS-SHEET 2 I I j 7 4 0- 2 I Li IIIIINIII D. S. SEYMOUR.

FEEDING MECHANISM FOR mm BAG SEWING MACHINES.

7 APPLICATION FILED NOV. 21,191]. 1,403,874, Patented Jan. 17, 1922.

4 SHkETS-SHEET 3.

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D. S. SEYMOUR.

FEEDING MECHANISM FOR FILLED BAG'SEWING MACHINES. APPLICATION FILED NOV. 21. 1917.

1,403,874, Patented Jan. 17, 1922.

4 SHEETS-SHEET 4.

wuemtoz UNITED STATES PATENT OFFICE.

DUDLEY S. SEYMOUR, OF OAK PARK, ILLINOIS, ASSIGNOR TO UNI COMPANY, OF CHICAGO, ILLINOIS, A. CORPORATION OF ILLINOIS.

FEEDING MECHANISM FOR FILLED-BAG-SEWING MACHIN ES.

Specification of Letters Patent. Patented 1 .17, 1922 Application filed November 21, 1917. Serial No. 203,155.

T 0 all whom it may concern:

Be it known that I, DUDLEY S. SEYMOUR, a citizen of the United States, residing at Oak Park, in the county of Lake, State of Illinois, have invented certain new and useful Improvements in Feeding Mechanism for Filled-Bag-Sewing Machines, of which the following is a description, reference being had to the accompanying drawing and to the figures of reference marked thereon.

. The invention relates to new and useful improvements in a filled bag sewing apparatus and more particularly to the means for conveying the bag to the stitching mecha nism.

An object of the invention'is to provide a filled bag sewing apparatus having means for supporting and conveying the filled bag to the stitching mechanism with an endless conveying means for also supporting and conveying the mouth of the bag so that the line of stitching formed in the mouth of the bag will be straight and parallel with the upper end of the bag.

A further object of the invention is to provide an apparatus of the above character wherein the supporting means for the mouthof the bag is in the form of an endless belt having supporting pins or the like for holding the mouth of the bag.

A still further object of the invention is to provide an apparatus of the above character with means for stripping the mouth of the bag from supporting pins.

In the drawings, which show by way of illustration one embodiment of the invention Figure 1 is a perspective view of a portion of a filled bag sewing apparatus embodying my improvements;

Figure 2 is a front view of the same, with parts of the sewing apparatus omitted, to-

gether with the driving mechanism therefor,

for the sake of clearness;

Figure 3 is a plan view of the parts shown in Figure 1;

Figure 4 is a detail showing the end of the sewing machine arm and the position of the traveling supporting device for the mouth of the bag; and V Figure 5 is a front view of the bag sewing apparatus.

Prior to my invention, a filled bag sewing apparatus has been provided for closing the mouths of bags, which includes a frame havof the bag as it is presented to the stitching mechanism, to insure that the line of stitching shall be straight and parallel with the upper end of the bag. This improved means consists of an endless band or chain having a plurality of supporting pins on which the mouth of the bag is impaled. This endless band travels in a fixed path, and, therefore, will support and convey the mouth of the bag to the stitching mechanism and also away from the stitching'mechanism, so as to insure a straight line of stitching being Iformed in the closing of the mouth of the Referring more in detail to the drawings, I have shown my invention as applied to a filled bag sewing apparatus having a frame 1, on which is mounted a bag support con sisting of a supporting table 2 and an endless conveyor 3. This conveyor runs over rollers 4c and 5 carried by the frame.

Extending upwardly from the frame is the standard 6 on which is mounted a vertically adjustable bracket 7. The sewing head indicated at 8 is bolted to this adjustable bracket. This sewing head includes a stand ard having an overhanging arm 9 and a work supporting arm 10. The sewinghead overhangs the bag support.

Mounted in the work arm is a feeding mechanism, the feed dog of which is indicated at 11. This feeding mechanism is of the usual construction and imparts a fourmotion movement to said feed dog. The sewing machine includes also a stitching mechanism having aneedle 12 carried by the needle bar 13. The needle bar is reciprocated in the usual way and a threaded ON SPECIAL MACHINE ratus includes a vertical drive shaft 16, on which is mounted a pulley 17. The pulley i 17 'is supported on the bracket 7 by a bracket ing with the re er 4 for driving the conveyor belt 3. The rollers 4 and 5 are carried by a-bracket which is bodily adjustable vertically by the screw shafts 53, 53. The worm driving connection is splined to the shaft 16 to permit of this adjustment without disturbthe driving connections for the conveyor. have indicated in the drawin s' a filled bag at B. The mouth of this fil ed bag is directed to the stitching mechanism and a line of stitching formed therein for closing the same. In order that this line of stitching Wlll be straight across the bag, as above noted, I have provided a supporting means or conveyor for the mouth of the bag, which is located adjacent the bag mouth position and travels with the bag and in synchronism with the feeding mechanism of the sewing 'head' and also in synchronism with the conveyor belt. This means consists of an endless "band 2O which runs over supportin v wheels 21 and 2 2. The axes of these wheels are vertical and one wheel is located in front of the stitching mechanism and the other in rear thereof. The band is provided with a series of spaced pins 23. The wheels 21 and 22 are carried by a bracket 24. The bracket 24 is formed with a base 25 bolted to' the bracket 7, above referred to. Said bracket 24 hastwo projecting arms which are formed with bearings 26 and 27 res ectively.

7 short stub shaft is mounted in the bearing 26 and carries the wheel 21. A shaft 28 is mounted in the bearing 27 and in a bearing 29. carried b an arm 30 projecting from the base 250 the bracket 24. The wheel 22 is mounted on this shaft 28. The

. shaft 28 is given an intermittent rotary movement by means of a friction clutch 31. The movable arm of the clutch is oscillated by a link 32 driven by an eccentric 33 on.

the main shaft-14 of the sewing machine- Through this friction clutch the shaft 28,

. as above noted, will be intermittently moved,

and this will imparta step-by-step movement to the 'band 20. The band 20 is an endless band, as noted, and passes across the work support traveling in a groove 34 formed in the work supporting arm 10 and above the feed dog 11 so as not to interfere with the feeding and stitching mechanisms of the sew it will be held without sagging ard carried straight through the machine so a straight line of stitching will be formed therein.

Avbar 34 extends along the path of travel of the bag'at the right of'the sewmg head and backs up the band so-that pressure may be exerted a ainst the bag mouth to cause the same to be perforated by the pins and im aled thereon.

projectin bearing 27. his arm carries an inclined shoe 36, slotted at 37 to permit the. band and the pins topass through the shoe. The

shoe extends across the path of travelof the band and serves as a means for stripping the bag from the pins.

In the operation of my device, the bag is set on the travelin conveyor 3 and the mouth is impaled on t e supporting pins 23. The travel of the band 20 together with the conveyor presents the bag to the sewing head. As soon as the bag reaches the sewing head, the feed will engage the mouth of the bag, and as this feed travels in synchronisni with the step-by-step movements of the band and the continuous movement of the conveyor, the bag-will be carried through the. sewing ahead. The supporting band holds the mouth of the bag up and insures that it will pass through the head in a straight line, so that the stitching formed in the mouth of the bag will be straight and parallel with the upper end of the bag;

It is understood, of course, that in this type ofmachine the operator stands in front :of thesewin head, or near the same, and

by reason o the fact that the head overarm 35 is mounted on the hangs the frame and the conveyor, which I carries the weight of the bag, the operator, may have ready access to the bags 'to' be stitched, placing the same on the open sided conveyor and impalin the mouth of the bag on the pin conveyor therefor.

It will be understood, of c0urse, that an automatic clipper may be used in connection with this filled bag sewing apparatus for clipping the enchalned loops between the filled sacks, so as to facilitate the automatic stripping of the sacks or bagsv from the pin conveyor. One type'bf automatic clipper which would be suitable for this purose is shown and described in my prior atent No. 1,170,349, granted February 1st, 1916.

From the above it will be noted that the sewi'rfg head and endless band for supporting the mouth of the bag may be simultaneously adjusted vertically. Also the endless conveyor may be vertically adjusted. By these sewing mechanism which includes a feeding mechanism and is supported on said frame and overhangs the front edge thereof,.- and an endless bag conveyorlocated adjacent the bag mouth position for supporting and pre senting the mouth of the bag to said sewing mechanism, and means for moving said conveyor in synchronism with the feeding mechanism.

2. A filled bag closing apparatus including in combination, a supporting frame, a

sewing mechanism which includes a feeding mechanism, means for supporting said sewing mechanism on said frame whereby the same overhangs the front edge of said frame, a support for the bottom of the bag disposed in advance of the front edge of said frame and under said sewing mechanism, an endless bag conveyor located adjacent the mouth of the bag position for supporting and presenting the mouth of the bag to said sewing mechanism, and means for moving the endless conveyor in synchronism with the feeding mechanism.

3. A filled bag closing apparatus including in combination, a supporting frame, a

sewing mechanism which includes a feeding mechanism and is supported on said frame and overhangs the front edge thereof, an endless bag conveyor located adjacent the bag mouth position for supporting and presenting the mouth of the bag to said sewing mechanism,-means for moving said conveyor in synchronism with the feeding mechanism, and means for adjusting the sewing head and endless bag conveyor.

4;. A filled bag closing apparatus, including in combination, a supporting frame, a sewing head supported on said frame and overhanging the front edge thereof, said sewing head including a stitching mechanism and a feeding mechanism, a horizontal support for the bottom of the bag disposed in advance of the front edge of said frame and under said sewing head, an endless conveyor located in front of said frame and above said bag support for supporting and presenting the mouth of the bag to the sewing head and driving connections between the feeding mechanism of the stitching mechanism and the endless conveyor mechanism for operating said mechanisms in synchronism.

5. A filled bag closing apparatus including in combination, a supporting frame, a sewing head supported on said frame and overhanging the front edge thereof, a support for the bottom of the bag disposed in advance of thefront edge of said frame and under said sewing head, and an endless conveyor located in front of said frame and above said bag support and having a pinrality of pins for supporting and presenting the mouth of the bag to said sewing head, and means whereby the sewing head and the bag support may be relatively adjusted vertically.

G. A filled bag. closing apparatus,i'ncluding in combination, a supporting frame, a sewing head supported on said frame and overhanging the front edge thereof, said sewing head including a stitching mechanism and an intermittent feeding mechanism, a horizontal support for the bottom of the bag disposed in advance of the front edge of said frame and under said sewing for supporting and presenting the mouth of the bag to the sewing head and driving connections between the feeding mechanism of the sewing head and the endless conveyor for operating said mechanisms in synchronism and means whereby the sewing head. endless conveyor and bag support may be relatively adjusted vertically, said means including devices for maintaining the driving connections in various adjusted positions. a

7. A filled bag closing apparatus including in combination, a supporting frame. a sewing mechanism which includes a feeding mechanism and is supported on said frame and overhangs the front edge thereof, an endless bag conveyor located adjacent the bag mouth position for supporting and presenting the mouth of the bag to said sewing mechanism, means for moving said conveyor in' synchronism with the feeding mechanism, and means for stripping the bag from the endless conveyor. 7

8. A filled bag closing apparatus including in combination, a supporting frame, a sewing mechanism which includes a feeding mechanism and is supported on said frame and overhangs the front edge thereof, an endless bag conveyor located adjacent the bag mouth position for supporting and presenting the mouth of the bag to said sewing mechanism, means for moving said conveyor in synchronism with. the feedin mechanism, said endless bag conveyor being provided with projecting pins on which the mouth of the bag is impaled.

9. A filled bag sewing machine comprising ing said traveling device, said work arm having a groove formed therein to receive said travelin device and support the same.

10. A filled bag sewing machine comprising a frame, a sewing head and including a work arm, and stitch forming mechanism, an endless band, a supporting bracket, wheels mounted on said bracket and carrying said band, said band being disposed so as to move across the work arm above the stitching point, a .pluralityofsupporting pins carried by-said band, and means for intermittently operating said band.

11. A filled bag sewing machine'comprising a frame, a bag support, a sewing head overhanging said support and including a work arm and stitch forming mechanism, an

endless band, a supporting bracket, wheels mounted on said bracket and carry ng said band, said band being disposed so as to. move across the'work arm above the stitching point, aplurality of supporting pins carried y said band, means for intermittently operating said band, and means for stripping the bag from the pins after the bag has been stitched. g

12. A filled bag sewing apparatus comprispo i'ting the filled bags and presenting the said endless conveyor, said sewing head in-.

same to the stitching mechanism, a sewing head carried by the frame and overhanging cluding a stitching mechanism and a feeding mechanism, an endless belt having a plurality of pins for engaging and supportingthe mouth of the bag and presenting the same to the stitching mechanism, said endless beltbeing disposed above the feeding mechanism,

- and means for actuating the same in timing with the feeding mechanism of the sewing head. a e

13. A filled bag sewing apparatus comprising a frame, an endless conveyor for supporting the filled bags and presenting the same to the stitching mechanism, a sewing head carried by the frame and overhanging said endless conveyor, said sewing head in-- cluding a stitching mechanism and a feeding mechanism, an endless belt having a plurality of pins for engaging and supporting the mouth of the bag and presenting the same to the stitching mechanism, said endless belt being disposed at both the feeding in and the feeding out sides of the stitching mechanisms, the said sewing head having a work supporting arm with a groove formed therein a ove the feed dog of the feeding mechanism for receiving and guiding said endless belt.

14. A filled bag sewing apparatus comprising a frame, an endless conveyor for supporting the filled bags and presenting the same to the stitching mechanism, a sewing head carried by the frame and 'overhan 'ng said endless conveyor, said sewing hea institching mechanism, means ad ustlng 531d endless conveyor on said mechanism, an endless belt having a plurality of pins for engaging and supporting the mouth of the bag and presentingvthe same to the stitching mechanism, said endless belt bein disposed in front of and in rear of the stitc ing mechanisms the said sewinghead having a work supporting arm with a groove formed therein above the feed dog of the feeding mechanism for receiving andguid in said endless belt andcommon means for driving the sewing head, the endless belt and the conveyor for therfilled bag.

15. A filled bag sewing apparatus comprising a frame, an endless conveyor for supportin the filled bags and presenting the same to the stitching-mechanism, a sewing head carried by the frame andoverhanging said endless conveyor, said sewing head including a stitching mechanism and a feeding mechanism, an endless belt having a plurality of pins for engaging and supportlng the mouth of the bag and presenting the same to the stitching mechanism, said endless belt being disposed so as to travel 'ina plane parallel with the plane of the supporting surfaces of the endless conveyor for the filled in a frame, an endless conveyor. for supb 16. A filled bag sewing apparatus com-- means for operating said conveyor continuously, means for operating said feedingv mechanism intermittently and in synchronism with the conveyor, an endless belt-having pins for engaging and supporting the month of the bag, and means for. operating said endless belt in timing with the feeding mechanism and sewing mechanism. v

17 A filled bag sewing apparatus com prising a frame, an endless conveyor for supporting the bag and presenting the same to a for vertically frame, a sewing head, a vertically adjustable bracket carried by the frame and supporting said sewing head, said sewing head including stitching mechanism and feeding mechanism, an endless belt having a series of pins for supporting the mouth of the bag and presenting the same to the stitching mechanism, and means for supporting said endless belt on said bracket whereby the same is vertically adjusted therewith.

In testimony whereof, I afiix my signa- 4 ture, in the presence of two witnesses.

DUDLEY S. SEYMOUR.

- Witnesses GERALD MAHONY, STEDMAN THoMAs. 

